520
FOUS53 KFSD 151008
PFMFSD
POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SIOUX FALLS SD
508 AM CDT SAT AUG 15 2026
IAZ012-152100-
SIOUX CENTER-SIOUX IA
43.08N 96.18W ELEV. 1446 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 79 63 76 56 77
TEMP 69 75 78 78 75 70 69 65 63 69 73 75 74 66 62 58 57 69 74 77 75
DEWPT 69 74 76 76 74 70 68 65 62 67 68 68 71 66 62 58 57 69 71 75 75
RH 100 97 94 94 97100 97100 97 93 84 79 90100100100100100 90 94100
WIND DIR SE S W W NW W NW N N N N N NW NW N N S S SW S S
WIND SPD 2 2 3 3 3 3 4 5 5 8 8 5 3 2 0 0 0 3 6 8 4
CLOUDS OV OV OV B1 B1 B1 SC B1 B1 FW FW CL FW FW FW SC B2 SC SC SC SC
POP 12HR 50 40 5 0 10
QPF 12HR 0.21 0.01 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C C C
TSTMS C C S C
OBVIS F
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 62 77 58 71 53 72 56 75
TEMP 67 63 75 74 65 59 69 69 59 56 69 70 62 57 73 73
DEWPT 67 63 75 73 65 59 68 68 59 56 68 70 62 57 71 73
PWIND DIR S SW N N NE SE SE S
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS B1 B1 B2 B2 B2 B1 B2 SC SC SC B1 SC SC SC B1 SC
POP 12HR 50 70 50 10 10 20 30 5
RAIN SHWRS C C L L C S S C C
TSTMS C C C C C S S S S
IAZ031-152100-
SIOUX CITY-WOODBURY IA
42.40N 96.38W ELEV. 1210 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 80 64 78 58 80
TEMP 68 75 79 79 75 72 71 68 65 70 75 77 76 69 64 61 59 70 77 80 78
DEWPT 68 74 77 76 75 72 70 68 65 68 70 69 70 67 64 61 59 68 70 73 74
RH 100 97 94 91100100 97100100 93 84 76 82 93100100100 93 79 79 88
WIND DIR SE S NW NW NW NW NW NW NW N N N N NW NW SW N S S S S
WIND SPD 2 2 3 4 4 3 4 5 5 8 9 8 4 2 1 0 0 2 6 6 5
CLOUDS OV OV OV B2 B1 B1 SC B1 B2 B1 FW CL CL FW FW SC B2 B1 SC SC SC
POP 12HR 60 30 5 0 10
QPF 12HR 0.20 0.04 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C C C S C
TSTMS S C C S S C
OBVIS F
HEAT INDEX 81 82
MAX HEAT 87 87 85
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 63 80 60 73 55 73 57 76
TEMP 69 64 77 76 67 61 71 71 61 57 71 71 63 58 74 74
DEWPT 68 64 76 75 67 61 69 69 61 57 68 70 63 58 71 73
PWIND DIR S S N N NE SE SE S
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC B1 B2 B2 B1 B2 B2 SC SC SC B1 SC SC SC B1 SC
POP 12HR 60 70 60 10 20 10 30 5
RAIN SHWRS C L L L L S S C C
TSTMS C C C L C S S S S
IAZ014-152100-
SPENCER-CLAY IA
43.15N 95.18W ELEV. 1325 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 81 64 77 55 79
TEMP 67 75 79 80 76 71 69 66 64 70 74 76 74 64 60 57 56 70 76 78 76
DEWPT 67 72 75 75 75 71 69 65 63 66 66 66 67 63 59 57 56 66 67 69 70
RH 100 90 88 85 97100100 97 97 87 76 71 79 97 96100100 87 74 74 82
WIND DIR E S W W W W NW N N N N N N N NW W SW SW SW SW S
WIND SPD 3 3 3 4 4 4 5 8 9 11 11 10 4 2 1 1 1 2 6 9 5
CLOUDS OV B2 B2 B2 OV B2 SC SC SC FW FW CL CL FW FW SC B1 SC FW FW SC
POP 12HR 60 60 5 0 5
QPF 12HR 0.15 0.07 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C L S C
TSTMS S C S S C
OBVIS F
HEAT INDEX 84
MAX HEAT 85
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 62 79 58 73 52 73 55 76
TEMP 66 63 76 73 64 59 70 69 57 54 71 70 60 56 73 73
DEWPT 66 63 72 72 64 59 65 65 57 54 64 66 60 56 68 69
PWIND DIR SW SW N N N SE S S
WIND CHAR LT LT LT GN LT LT LT LT
AVG CLOUDS B1 B2 B2 B2 B2 B2 B1 SC SC SC B1 SC SC SC B1 SC
POP 12HR 60 70 60 10 10 10 30 10
RAIN SHWRS C L L L L S C
TSTMS C C C C C S
IAZ022-152100-
STORM LAKE-BUENA VISTA
42.60N 95.23W ELEV. 1427 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 81 65 77 58 78
TEMP 70 75 79 80 77 71 70 69 65 70 74 76 74 65 62 60 59 70 76 78 76
DEWPT 70 73 76 77 75 71 70 68 65 69 69 69 70 65 62 60 59 67 68 71 73
RH 100 94 91 91 94100100 97100 97 84 79 87100100100100 90 76 79 90
WIND DIR E S NW W W W NW N N N N N N N NW W SW SW SW SW S
WIND SPD 3 2 2 3 3 3 4 6 6 9 9 8 3 1 1 1 1 1 4 5 3
CLOUDS OV OV B2 OV B2 B1 B2 B2 B1 SC FW CL CL FW FW SC B1 SC SC SC SC
POP 12HR 60 60 5 0 5
QPF 12HR 0.14 0.07 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C L S C
SPRINKLES
TSTMS S C S S C
OBVIS F PF
HEAT INDEX 81 87
MAX HEAT 86 88
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 63 79 60 73 55 73 57 76
TEMP 66 64 76 75 66 61 70 70 59 57 70 70 61 58 73 73
DEWPT 66 64 74 74 66 61 68 68 59 57 66 68 61 58 70 71
PWIND DIR SW SW N N N SE SE S
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC B1 B2 B2 B2 B2 B2 SC SC SC B1 SC SC SC B1 SC
POP 12HR 50 70 70 10 10 10 30 10
RAIN SHWRS C C L L L S S C
TSTMS C C C C C S S S
MNZ072-152100-
MARSHALL-LYON MN
44.47N 95.82W ELEV. 1151 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 82 62 78 57 82
TEMP 67 76 81 80 77 71 67 64 62 69 74 77 76 66 61 59 58 73 79 82 79
DEWPT 67 72 73 73 72 70 65 62 62 63 62 59 60 60 58 57 57 62 62 64 67
RH 100 87 77 79 85 97 93 93100 81 66 54 58 81 90 93 96 68 56 55 67
WIND DIR S SW W W W NW NW NW NW N N N N NW SW SW SW SW SW SW SW
WIND SPD 5 5 6 9 9 9 9 8 9 11 12 11 8 2 3 3 4 6 9 11 9
CLOUDS OV B1 B2 B2 SC SC B1 SC FW SC CL CL CL FW FW SC SC FW FW SC SC
POP 12HR 40 20 0 0 30
QPF 12HR 0.04 0.01 0 0 0.03
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C S C C C
TSTMS C C S S S
OBVIS PF
HEAT INDEX 85 85
MAX HEAT 86 87 83
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 63 79 57 73 55 76 59 79
TEMP 67 63 78 73 63 58 71 72 59 57 74 74 63 59 77 77
DEWPT 66 63 68 68 63 58 59 59 57 56 60 63 62 59 64 66
PWIND DIR SW W NW N W SW S S
WIND CHAR GN LT LT GN LT LT LT LT
AVG CLOUDS B1 B1 B1 B2 B2 B1 B1 SC SC SC SC FW SC SC SC FW
POP 12HR 50 70 50 10 10 20 30 10
RAIN SHWRS C S C L C S S C S
TSTMS C S C C S S S
MNZ081-152100-
WINDOM-COTTONWOOD MN
43.87N 95.12W ELEV. 1355 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 80 63 76 56 79
TEMP 67 74 79 80 76 71 69 65 63 69 73 76 74 65 61 58 57 72 77 79 77
DEWPT 67 71 72 73 72 71 68 63 62 63 61 62 61 60 59 57 57 62 61 64 66
RH 100 90 79 79 87100 97 93 97 81 66 62 64 84 93 96100 71 58 60 69
WIND DIR SE S W W W NW NW NW NW N N N N N W W SW SW SW SW SW
WIND SPD 4 4 3 5 5 5 6 9 9 12 12 11 6 2 1 2 2 4 9 10 9
CLOUDS OV B2 B2 B1 OV B1 B1 SC SC FW FW CL CL CL FW SC SC SC FW FW SC
POP 12HR 60 60 0 0 20
QPF 12HR 0.08 0.02 0 0 0.02
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C C L S S L
TSTMS C C C S
OBVIS PF
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 62 77 57 72 53 73 56 76
TEMP 67 63 75 73 64 57 69 70 58 55 71 71 61 57 73 74
DEWPT 66 63 67 67 64 57 59 59 57 55 59 62 61 57 63 65
PWIND DIR SW W N N NW SW S S
WIND CHAR LT LT LT GN LT LT LT LT
AVG CLOUDS SC B1 B2 B2 B2 B1 B1 SC SC SC SC SC SC SC SC SC
POP 12HR 60 70 60 10 5 10 30 20
RAIN SHWRS L C C L L S S C S S
TSTMS C S C C S S S S
MNZ089-152100-
WORTHINGTON-NOBLES MN
43.65N 95.58W ELEV. 1584 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 80 62 76 56 78
TEMP 69 74 78 79 75 70 68 64 62 69 73 75 74 64 60 58 57 70 75 78 76
DEWPT 69 72 73 73 73 70 67 63 62 64 63 62 63 61 59 57 57 64 65 67 68
RH 100 93 85 82 94100 97 97100 84 71 64 69 90 96 96100 81 71 69 76
WIND DIR SE SW W W W NW NW N N N N N N NE W SW SW SW SW SW SW
WIND SPD 4 4 4 5 5 5 8 10 9 11 11 9 5 2 1 2 2 5 9 10 9
CLOUDS OV OV B2 B1 B1 B1 SC SC SC FW CL CL CL FW FW SC SC SC FW FW SC
POP 12HR 60 50 0 0 10
QPF 12HR 0.12 0.02 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C C C
TSTMS C C C S
OBVIS F
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 62 77 57 71 53 73 56 76
TEMP 66 63 74 72 64 58 69 69 57 55 70 71 61 57 73 73
DEWPT 66 63 70 69 63 58 61 61 57 55 62 63 61 57 65 67
PWIND DIR SW W N N NW SW S S
WIND CHAR GN LT LT GN LT LT LT LT
AVG CLOUDS SC B1 B1 B2 B2 B1 B1 SC SC SC SC SC SC SC B1 SC
POP 12HR 50 70 60 10 10 10 30 20
RAIN SHWRS C C C L L S S C S
TSTMS C S S C C S S S
SDZ040-152100-
BROOKINGS-BROOKINGS SD
44.30N 96.80W ELEV. 1617 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 81 59 78 54 80
TEMP 69 73 79 80 78 69 64 61 59 69 75 78 76 65 60 57 55 70 77 80 78
DEWPT 69 72 73 73 71 67 63 60 58 62 60 59 60 59 58 57 55 64 65 67 68
RH 100 97 82 79 79 93 97 97 96 78 60 52 58 81 93100100 81 67 65 71
WIND DIR S SW W W NW N N N N N N NW N NE S S S S SW SW SW
WIND SPD 5 6 9 10 9 8 6 6 6 9 11 10 6 2 1 2 3 6 11 12 9
WIND GUST 23
CLOUDS OV OV OV B1 SC SC SC SC SC FW CL CL FW FW SC B1 B1 FW FW SC SC
POP 12HR 30 10 0 0 20
QPF 12HR 0.09 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C S S S S C
TSTMS C C S C
OBVIS F
HEAT INDEX 83 82
MAX HEAT 85 83
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 60 78 54 73 52 75 55 78
TEMP 65 61 75 72 62 55 71 71 57 54 73 73 61 56 76 76
DEWPT 65 61 69 68 61 55 60 60 57 54 61 64 61 56 65 67
PWIND DIR SW SW N N SE S S S
WIND CHAR LT LT LT GN LT GN LT GN
AVG CLOUDS SC B2 B2 B2 B2 B1 B2 SC SC SC B1 SC SC SC B1 FW
POP 12HR 40 70 40 10 10 20 30 5
RAIN SHWRS C C L C S S C S
TSTMS C S C C S S S S
SDZ050-152100-
BURKE-GREGORY SD
43.18N 99.29W ELEV. 2142 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 78 60 77 60 82
TEMP 66 72 73 76 76 70 66 63 60 67 73 76 75 68 64 62 61 68 78 82 78
DEWPT 66 71 71 70 69 66 63 61 59 63 63 62 65 64 64 62 61 68 70 69 71
RH 100 97 93 82 79 87 90 93 96 87 71 62 71 87100100100100 76 65 79
WIND DIR SW NW N NW N NW N N N NE N NE E SE S S S S SW SW SW
WIND SPD 9 10 12 12 10 8 8 8 5 5 6 6 5 4 6 8 10 12 13 11 6
CLOUDS OV OV OV B1 B2 B1 B1 FW FW FW CL FW FW SC B1 B1 B1 SC FW SC SC
POP 12HR 50 10 5 60 30
QPF 12HR 0.31 0 0 0.08 0.01
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C C S L L C C S S C
TSTMS S S S S S C
HEAT INDEX 85
MAX HEAT 86
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 63 79 58 72 56 76 59 80
TEMP 67 64 76 73 64 58 69 70 61 58 72 74 63 59 76 77
DEWPT 67 64 70 70 64 58 64 65 61 58 66 68 63 59 68 69
PWIND DIR SW NE N N SE S S S
WIND CHAR GN GN GN GN GN GN GN GN
AVG CLOUDS SC B1 B2 B2 B1 B1 B2 SC SC SC SC SC FW FW SC FW
POP 12HR 50 60 30 20 30 30 20 5
RAIN SHWRS C C C L C S S C C S
TSTMS C C C C C S S S
SDZ057-152100-
CHAMBERLAIN-BRULE SD
43.77N 99.32W ELEV. 1565 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 80 59 79 60 84
TEMP 67 73 75 78 78 71 66 62 60 68 74 78 77 69 65 64 61 70 78 84 81
DEWPT 67 72 72 69 67 65 63 61 60 63 63 62 64 65 65 64 61 68 70 69 69
RH 100 97 90 74 69 81 90 97100 84 69 58 64 87100100100 93 76 61 67
WIND DIR SE NW NW NW NW N N N N NE N N E SE S S S S S SW SW
WIND SPD 5 6 11 12 10 6 6 5 4 4 4 5 4 4 5 5 6 9 10 9 6
CLOUDS OV B2 B2 B1 SC B1 B1 FW FW CL CL FW CL SC B1 B1 B1 FW SC SC SC
POP 12HR 40 5 5 60 20
QPF 12HR 0.09 0 0 0.05 0.02
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C S L L S S C
TSTMS S S C
HEAT INDEX 87 84
MAX HEAT 82 88
DENSE FOG Y
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 61 79 56 74 56 78 58 82
TEMP 68 63 76 74 64 58 71 72 62 59 74 76 64 60 78 79
DEWPT 68 63 71 69 64 58 64 64 62 59 66 67 64 60 68 67
PWIND DIR S NE N N SE S SE S
WIND CHAR LT GN LT GN LT GN LT LT
AVG CLOUDS SC B1 B2 B2 B1 B1 B2 SC SC SC B1 SC FW FW B1 FW
POP 12HR 50 60 30 10 20 20 20 5
RAIN SHWRS C C C L C S S S S
TSTMS C C S C C S S S
SDZ038-152100-
HURON-BEADLE SD
44.38N 98.22W ELEV. 1282 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 81 60 79 59 82
TEMP 68 73 77 79 79 70 65 62 60 68 75 78 77 67 63 61 60 69 78 82 80
DEWPT 68 71 71 70 68 64 62 61 59 63 61 61 63 62 62 61 60 66 68 69 70
RH 100 93 82 74 69 81 90 97 96 84 62 56 62 84 97100100 90 71 65 72
WIND DIR SE SW W NW NW N N N NW N N NW NW E SE S S S S SW SW
WIND SPD 4 4 10 11 9 8 8 6 6 8 9 8 3 3 3 4 5 8 11 10 6
CLOUDS OV OV B2 B1 SC B1 SC FW FW CL CL FW FW FW B1 SC B1 SC FW SC SC
POP 12HR 20 5 0 10 20
QPF 12HR 0.03 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S S S S S C
TSTMS S S C
OBVIS F+
HEAT INDEX 85 82
MAX HEAT 84 86
DENSE FOG Y
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 61 79 56 74 56 77 58 80
TEMP 66 62 76 74 63 57 72 72 60 57 74 75 63 59 77 78
DEWPT 66 62 69 69 63 57 62 63 60 57 64 67 63 59 67 68
PWIND DIR S S N N SE S S S
WIND CHAR LT LT LT LT LT GN LT GN
AVG CLOUDS SC B1 B2 B2 B1 B1 B1 SC SC SC B1 SC SC SC SC FW
POP 12HR 40 70 30 10 10 20 20 5
RAIN SHWRS C S L L C S S
TSTMS C S S C C S S
SDZ059-152100-
MITCHELL-DAVISON SD
43.76N 98.02W ELEV. 1312 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 81 61 79 58 82
TEMP 69 74 77 79 77 70 65 63 61 69 75 78 77 67 63 61 59 70 78 82 79
DEWPT 69 73 74 73 72 69 65 63 60 64 63 63 66 65 63 61 59 68 70 71 72
RH 100 97 90 82 85 97100100 97 84 66 60 69 93100100100 93 76 69 79
WIND DIR SE S W W NW NW N N N N N N N S S S S S S S S
WIND SPD 5 5 8 10 9 6 8 8 6 8 9 9 5 2 3 3 4 8 11 11 8
CLOUDS OV OV B2 B1 SC B1 B1 FW FW CL CL FW FW SC SC B1 B1 SC SC SC SC
POP 12HR 50 5 0 20 20
QPF 12HR 0.08 0 0 0.02 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C S S S S S C
TSTMS C S C
OBVIS F+
HEAT INDEX 87 81
MAX HEAT 86 89
DENSE FOG Y
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 62 80 57 75 55 77 57 80
TEMP 67 63 77 74 65 58 72 73 61 57 74 74 64 58 77 78
DEWPT 67 63 72 73 65 58 64 66 61 57 66 69 63 58 69 71
PWIND DIR S SW N N SE S SE S
WIND CHAR LT GN LT GN LT GN LT GN
AVG CLOUDS B1 B1 B2 B2 B1 B2 B2 SC SC SC B1 SC SC FW SC FW
POP 12HR 40 70 30 5 20 20 20 5
RAIN SHWRS C C L L C S S S S
TSTMS C C S C C S S S
SDZ062-152100-
SIOUX FALLS-MINNEHAHA SD
43.57N 96.73W ELEV. 1424 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 81 62 79 57 80
TEMP 68 75 79 78 76 71 68 65 62 71 76 79 77 67 63 60 58 71 77 80 78
DEWPT 68 73 75 74 73 70 67 63 61 64 63 63 63 62 61 59 58 65 67 70 71
RH 100 94 88 88 90 97 97 93 97 79 64 58 62 84 93 96100 81 71 72 79
WIND DIR SE S W W NW NW NW N N N N N NW N NE SE S S S SW S
WIND SPD 3 3 5 6 5 5 5 8 5 8 9 8 5 2 1 0 1 4 10 11 9
CLOUDS OV OV OV B2 SC SC SC SC SC FW CL CL CL FW FW SC B1 SC SC SC SC
POP 12HR 50 20 0 5 20
QPF 12HR 0.11 0.01 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C S S S C
TSTMS C C S S C
OBVIS F
HEAT INDEX 81 83
MAX HEAT 87 86 81 85
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 62 79 58 74 55 75 57 78
TEMP 67 63 76 74 64 58 71 71 59 56 72 73 62 58 76 76
DEWPT 67 63 72 72 64 58 64 64 59 56 64 67 62 58 68 69
PWIND DIR S SW N N E SE SE S
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS B1 B1 B2 B2 B1 B1 B2 SC SC SC B1 SC SC SC B1 FW
POP 12HR 40 80 50 10 10 20 30 5
RAIN SHWRS C C L D C S S S C S
TSTMS C C C C C S S S S S
SDZ070-152100-
VERMILLION-CLAY SD
42.95N 96.92W ELEV. 1132 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 80 63 77 58 79
TEMP 69 76 79 78 76 73 70 67 64 70 74 77 75 68 65 61 59 70 76 79 77
DEWPT 69 75 76 75 75 72 69 67 64 68 68 70 71 68 65 61 59 70 72 75 77
RH 100 97 91 91 97 97 97100100 93 82 79 87100100100100100 87 88100
WIND DIR SE S NW NW W W NW NW NW N N N NW W W S S S S S S
WIND SPD 3 3 5 5 5 4 5 6 6 8 10 8 5 3 1 1 2 4 9 9 6
CLOUDS OV OV OV B2 B1 SC B2 SC B1 SC CL CL CL FW SC B1 B2 SC SC SC SC
POP 12HR 70 30 5 5 30
QPF 12HR 0.18 0.01 0 0 0.02
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S L C C C C S S C
SPRINKLES
TSTMS S C C C S C
OBVIS F+
DENSE FOG Y
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 63 79 59 72 55 73 57 76
TEMP 69 64 76 76 67 60 70 70 62 58 71 71 64 59 74 75
DEWPT 69 64 76 75 67 60 69 70 62 58 69 71 64 59 72 74
PWIND DIR S SW N N E SE SE S
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS B1 B1 B2 B2 B2 B2 B2 SC SC SC B1 SC SC SC B1 FW
POP 12HR 60 70 50 10 20 20 30 5
RAIN SHWRS C L L L C S S C C
TSTMS C C C C C S S S S
SDZ069-152100-
YANKTON-YANKTON SD
42.95N 97.39W ELEV. 1207 FT
508 AM CDT SAT AUG 15 2026
DATE SAT 08/15/26 SUN 08/16/26 MON 08/17/26
CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
MAX/MIN 80 63 77 59 80
TEMP 69 76 78 78 77 72 69 66 63 68 74 77 75 67 64 61 60 69 76 80 78
DEWPT 69 74 76 75 75 72 69 66 63 67 68 68 71 67 64 61 60 69 72 75 77
RH 100 94 94 91 94100100100100 97 82 74 87100100100100100 87 85 97
WIND DIR SE S NW W W NW NW N N N N N NW W W SW S S S S S
WIND SPD 3 4 5 5 5 5 6 8 6 8 9 8 5 3 2 2 2 4 10 10 6
CLOUDS OV OV OV B1 B1 B1 B1 SC B1 FW CL CL CL FW SC B1 B2 SC SC SC B1
POP 12HR 60 20 0 10 40
QPF 12HR 0.16 0.01 0 0 0.04
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S L C S C C S S C
TSTMS S C C S S C
OBVIS F+
HEAT INDEX 83
MAX HEAT 86 86 87
DENSE FOG Y
DATE TUE 08/18/26 WED 08/19/26 THU 08/20/26 FRI 08/21/26
CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
MIN/MAX 63 79 59 73 56 74 58 77
TEMP 68 64 76 76 67 60 70 71 62 58 71 72 64 59 74 75
DEWPT 68 64 76 75 67 60 68 70 62 58 69 72 64 59 72 75
PWIND DIR S SW N N E SE SE S
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS B1 B1 B2 B2 B2 B1 B2 B1 SC SC SC SC SC SC B1 FW
POP 12HR 50 70 40 10 20 20 30 10
RAIN SHWRS C C L L C S S C S
TSTMS C C C C C S S S S
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page